1137 
#488 *Urocyon cinereoargBnteus californicus Mearns, 1897, Proc. U. S. Nat. 
Mus., V. 20 (1126), 459. California Gray Fox. San Jacinto Mountains, 
Riverside Co., Calif.* So. #488 Urocyon californicus californicus, q. v. 
#488 *Urocyon cinereoargenteus cinereoargenteus (Schreb., 1776, Saug- 
thiere, v. 3, 360 [Canisi]; Erxl., 1777, Syst. Regni Anim., 567[ Canis ']) 
Miller, 1912, U. S. Nat. Mus., Bui. 79, 86. Eastern North America*. 
#488 *Urocyon [or Canis ^ cinereoargenteus scottii (Mearns, 1891, Bui. 
Amer. Mus. Nat. Hist., v. 3 (2), June 5, 236 [Urocyon virginianus]) Allen, 
1895, Bui. Amer. Mus. Nat. Hist., v. 7, June 29, 253. Scott's grey fox, 
Pinal Co.*, Arizona; western New Mexico; Southern California. 
Toxocara 1484.^ — Intest. 
canis. 
#488 *Urocyon cinereoargenteus sequoiensis (Dixon, 1910, Univ. Calif. Publ. 
ZooL, V. 5 (7), Feb. 12, 303 [U. californicus]). So. #488 Urocyon califor- 
nicus sequoiensis, q. v. 
#488 Urocyon species. 
Ixodes t866.— Ext. 
^californicus. — Calif. — Grey fox. 
#488 Urocyon* [or Vulpes (Vulpes Vulpina 0 virginianus^ (Schreb., 1776, 
Saugthiere, v. 3, 361, pi. 925 [Canis i]) Gray, 1868, Proc. Zool. Soc. London, 
522. Gray fox, dreifarbiger Fuchs, Grisfuchs, Kitfuchs, Colishe, Oztuhua, 
Tigrillo, Zorro. N. America. So. #488 Urocyon * cinereoargenteus. 
Trichodectes fl 100.— Ext. 
*quadraticeps. — Palo Alto *, Calif. — T. h. 
#489 (408) . Auditory bulla not inflated or divided. See #490. 
#490 (554). MusTELiDAE 48 49 Swainson, 1835, Nat. Hist. Class. Quad., pp. vii, 
361. — Badgers, martens, otters, weasels, etc. Alisphenoid canal absent. 
True molars 1-1 in upper jaw, 2-2 in lower (rarely 1-1, see #541 Poecilor- 
gale). Teeth generally: i. 3/3, c. 1/1, pm. 4/4, m. 1/2; the first premolar 
in many Mustelidae is rudimentary, and is lost early; larger cheek-teeth 
of a combined trenchant and crushing type, the last upper premolar and 
first lower molar strongly differentiated as carnassials, the former 3-rooted, 
its inner lobe in front of middle of crown; upper carnassial with not more 
than 2 outer cusps. Form usually slender, size moderate or small (includ- 
ing the smallest known carnivores); legs always short; feet digitigrade or 
subplantigrade; toes 5 on front feet, 5 on hind feet. Essentially cosmopol- 
itan; absent from Madagascar and Australia; in Europe west to Ireland. 
See #491. Syn. Mustelladae Gray, 1821, London Med. Repository, v. 
15, 301. 
#491 (503). Hind feet larger than fore feet; head, fur, tail, and limbs modified 
in the normal mammalian fashion for aquatic life; kidneys lobulate. See 
#492. 
#493 (501). LuTPJNAE Burmeister, 1854, Syst. Ueber. Thiere Bras., Mamm., 
Berlin, 113.— Otters, Ottern. Hind feet with normally proportioned digits 
(digits 2 and 5 much shorter than 3 and 4). Tail long and highly mus- 
cular. External form long and slender; fur very dense. Legs unusually 
short; feet short, rounded; toes webbed; claws small, curved, blunt, or 
absent. Basicranial and basifacial axes approximately in one plane; teeth 
powerful, upper carnassial with talon large, nearly as long as blade; molar 
<8 For a recent classification of the Mustelidae into subfamilies, see Pocock, 1922, Proc. Zool. Sqc, 
London, January, 803-837. 
« In a classification of the Mustelidae, Satunin, 1911, Mitt, kaukas. Mus. Tiflis, v. 5 (2-3), 266-280, 
proposes a new subgenus Kolonokus under Putorius for the Mustela sibirica group. We follow the clas- 
sification of Miller and Pocock but place the species Satunin gives under Mustela^ (Kolonokus). 
